126 Records of the Indian Museum. [Vol. XX, 



tibio-tarsal articulation reaching be- 

 tween eye and tip of snout, tip of snout, 

 or slightly beyond ; tibia 3 to 4 times as 

 long as broad : tympanum | to | dia- 

 meter of eye ; male with external vocal 

 sacs and a humeral gUnd .. ... R, arfaki, A. B. Mey. 



8. First finger as long as or a little longer than second ; tibio-tarsal arti- 

 culation reaching tip of snout or a little beyond. 

 Tympanum I to ^ diameter of eye; interorbital region 

 as broad as or a little broader than upper eyelid ; 

 tibia 4 to 5 times as long as broad ; male with internal 

 vocal sacs and no humeral gland ... ... R. nndersonii, Blgr. 



Tympanum f size of eye ; interorbital space a little 



narrower than upper eyelid ... ... ... R. schmackeri, Boettg. 



b. Toes not more than f webbed ; an outer metatarsal tubercle, 

 a. Tibio-tansal articulation reaching consid- 

 erably beyond tip of snout ; first finger 

 slightly longer than second ; toes | web- 

 bed ; tvmpanum \ diameter of eye ... R. ijimce, Stejn. 

 j8. Tibio-tarsal articulation not reaching beyond tip of snout ; first finger 

 longer than second ; tympanum 5- to f diameter of eye. 

 *Toes I to f webbed ; outer metatarsals separated nearly to the 

 base ; tibia 4 to 5| times as long as broad ; male with internal 

 \oc;il sacs. 

 Interorbital space a little narrower than the upper eye- 

 lid ; head a little longer than broad ; male without 

 humeralgland ... ... ... R. signata, Gi\\\-. 



Interorbital space as broad as or a little narrower than 

 the upper ej'elid; head as long as broad ; male with a 

 humeral gland ... ... ... ... R. pictiirata, Blgr. 



Interorbital space nearly twice as broad as the upper 



eyelid ... ... ... ... R. nioellendorffi. Boettg. 



**Toes not more than % webbed; outer metatarsals separated nearly 

 to the base ; first finger much longer than second ; head as long 

 as broad orj broader than long ; male with external vocal sacs 

 and a humeral gland. 

 Toes \ to \ webbed; an outer metatarsal tubercle; 



tibia 4 to 4nimes as long as broad ... ... R. glundiilosa, ^\gr. 



Toes \ webbed ; no outer metatarsal tubercle ... R. baramica, Boettg. 



***Toes less than \ webbed ; outer metatarsals bound together in 

 basal third. 

 Head as long as broad; tibia 3 to 4 times as long as 

 broad ; toes \ webbed ; male without vocal sacs, 

 without humeral gland ... ... ... R. liicttiosa, Feiers. 



Head longer than broad ; tibia 5 times as long as broad ; 



toes i webbed ... ... ... ... R. debussyi, v. Kamp. 



B. Tips of fingers dilated into moderate or rather large discs, as large as or 

 smaller than those of the toes, the width of which equals at least twice 

 that of the narrowest part of the penultimate phalanx. 

 I. Discs of fingers smaller than those of the toes ; tibia usually more than i| 

 times in length from snout to vent ; a glandular dorso-lateral fold ; head as 

 long as broad or longer than broad ; tympanum f to once diameter of eye. 



a. Male with large external vocal .sacs and a humeral gland ; tibia 4 to 4-3- 



times as long as broad. 

 Tibio-tarsal articulation reaching beyond tip of snout ; 



heels strongly overlapping ; tibia i\ to if times in 



length from snout to vent ... ... ... R. grisea, v. Kamp. 



Tibio-tarsal articulation reaching eye or between eye 



and nostril ; heels more or less overlapping ; tibia 2 



to a little over 2 times in length from snout to vent... R. krefftii, Blgr. 



b. Male with vocal sacs internal, exceptionally external but feebly developed ; 



no humeral gland. 

 Tibio-tarsal articulation reaching nostril, tip of snout, 

 or beyond ; heels strongly overlapping ; tibia 4 to 5| 



